Buy a solar power kit for $6,750.

Who's profiting: 2012 Supplies. They'll sell you a number of items for life after people.

Prices: An emergency radio is $150. A solar powered oven is $240. Want a grizzly bear trap? That'll be $170.

Buy half a floor in this Kansas bunker for $900,000.

PlanetShifter

Who's profiting:Larry Hall. He's converting an Atlas F missile base in Kansas for use as living and survival space. The finished product will resemble a furnished luxury condo, except it will be entirely underground.

Price: $900,000 for half a floor of living space.

Buy a "Time May Be Running Out" watch for $14,225.

Who's profiting:Melrose Jewelers. They're selling an end-of-the-world-themed Rolex called "Time May Be Running Out." According to CEO Kishan Agarwal, the watch is specifically geared towards "those people who live every minute to the fullest."

Price: $14,225

Buy a post-apocalypse seed kit for a little over $200.

Who's profiting: Emergency Seed Bank. They will sell you seeds that are specially prepared to be used after a disaster.

The seeds are dried to an appropriate moisture for maximum shelf life, sealed in an airtight bag, then stored in military grade canisters. According to the site, "your seed bank can be wrapped in a garbage bag and buried for decades."

Read about the end of the world for about $15

Who's profiting: Max Brooks and other apocalypse-minded authors. There are a number of entertaining books out there inspired by the end of the world, perhaps most notably Brooks's World War Z.

The book is a tongue-in-cheek "oral history" of mankind's war against zombies.

Price: We couldn't find sales figures, but the World War Z has sold well enough that there's interest in making a movie out of it.

Hear what's happening for free.

George NooryTruTV

Who's profiting:George Noory, host of Coast to Coast, a hugely popular radio show devoted to the paranormal and conspiracy theories. He regularly devotes time on his show to 2012 with the motto "be prepared, not scared."

Noory promises to be live on the air on December 21, 2012 - the night the Mayans said we're toast.

Price: The show is obviously free to listen to, but advertisers will likely pay a premium on that fateful day next year.

How about a portable shelter for $8,799?

Who's profiting: UndergroundBombShelter.com. They have a number of products available for the survival-oriented, including this portable nuclear-chemical shelter.

Prices: The portable shelter is $8,799. A more heavy-duty underground shelter requires contacting them before a price is given.

Pay $25,000 per person to to live in the Terra Vivos shelter. "Which side of the door do you want to be on?" the teaser video asks.

Who's profiting:Terra Vivos. This must-watch video came across to us as equal parts explanation and fear-mongering. They will sell you space in a preexisting underground shelter in Nebraska in order to survive any sort of catastrophe that might be headed our way.

Price: $25,000 per person after you pass screening by the "Vivos Selection committee."